I prefer 'Broken Balance' to 'Balanced Breaking'.
In WoW Legion, when every class had a legendary weapon that broke their kits I loved it. Every class's perks became amplified and the classes themselves became extremely different and unique. Now that everyone's lost their artifact weapon traits spontaneously in the pre-patch for BfA, however, I sorely miss them. It's not even that great of a loss in-game and yet I feel as though a favorite game of mine is being deleted from existence yet again. Accretion stinks.
Nowadays in LoL every champion does the exact same broken thing: 'one-shot' you or die trying. Fights often last 2 seconds, sometimes less. It's like playing a fighting game but there's only one character to pick from and all he has is tons of damage and ways to help deal more damage. Everyone breaks the rules but in the exact same way. This is further encouraged by tank items being hilariously awful and tanky bruiser items being barely decent enough to be worthwhile.
The roster's 140, Riot. We're only seeing 1. You've made every single champion either useless or break the game in the exact same way: damage. That's the problem with the Runes Reforged meta: diversity has been removed from the game. Please bring it back.